BobDeSoto Posted October 17, 2017 Report Posted October 17, 2017 1951 Desoto with fluid drive and tip toe transmission. Transmission makes a rattly sound when it shifts from low to high and then it slips out of high at about 35 MPH. Quote
Dodgeb4ya Posted October 18, 2017 Report Posted October 18, 2017 Did you look in your factory shop manual on how to check the transmission oil level? Fill plug on rt side of trans .....uses 10 Weight oil. The shop manual is where to get the fixin facts! Make sure the idle is at 450-500 RPM. Clean the silver governor points of oil contamination carefully with a electrical contact cleaner.. not a file or sand paper. If it is full of oil and grinds , bangs or pops out of high gear more likely a worn input shaft and blocker ring/ sleeve issue. The internal oil pump can be worn/weak causing this issue too. Not enough oil pressure will cause this banging/ grinding issue too. 1 Quote
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